From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0F93DC43381 for ; Tue, 2 Apr 2019 07:20:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D0DE82070B for ; Tue, 2 Apr 2019 07:20:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="faRnzKB6" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729067AbfDBHUc (ORCPT ); Tue, 2 Apr 2019 03:20:32 -0400 Received: from mail-lj1-f195.google.com ([209.85.208.195]:41312 "EHLO mail-lj1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725778AbfDBHUc (ORCPT ); Tue, 2 Apr 2019 03:20:32 -0400 Received: by mail-lj1-f195.google.com with SMTP id k8so2178067lja.8; Tue, 02 Apr 2019 00:20:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-transfer-encoding:content-language; bh=pco4MTqs2xxgcSHHdU1koP29sUUcMScs/RtlSPm6gPA=; b=faRnzKB6jXfUsEfqf1HmcugWcx8CDFz0GuXplh8nA3IswlH/cV0VsWRN7A7QxNfio4 v5Q0RM/Gxl+Uy1Se+OfVccqMGrwQ+PMsQyBzDPEnOQy0neEvDOKYv3tVV/PXq12WXq6Z MHLbKUmCUSJFUtZBV2q5nIMkjuie8wushawnwCTM4CtZU5B8juasPJ9KWERwRewGH1C1 oo+hsxfEy+PaAiZpyfILhdQjaQgIH3n+PNPkYeqhigcioAKYNXb0azdQJKD2oIl4/xmV OkhmhPuja6wI9yBLcjNsjS1K+OGIFcgDOzMjpTz8mEBeDLGJIXAszzRJ+R9XOwDqRhKL R2lA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=pco4MTqs2xxgcSHHdU1koP29sUUcMScs/RtlSPm6gPA=; b=m6MlZMu1T9DAGN20FTN71mcrHZCpk0v/AFZdN8HoBdZXJ7/4hBS6ctxurwYI9DCiOO SBwD2VnyUME79jcSwOhlygcptqXtGz1ayVUF9HoZbrRyPPHQv7Bt6lJzu7aqSz9Eoyvf GGWbY/BKxk6AgQwKfLKwMg3ML+4kAVNKAYTTW3YinLICzXzvpAaCRF+TEiRI85UZQUTl J6pbSXiIPgJs1x52zMnF2Mr7G+r6tNrSm6e5gOwsdh2iiZF82cFUXJNqte+8C1wjpIcI LNyf0uigXFCWmV3nbMYSAM0jLrfbKRdQ4NVK8Tna55iHl+zLIuFcdyKxy7t5wjsGwmDt +UAA== X-Gm-Message-State: APjAAAX5RtR2atjlhZuXkZrFb28PCjBVS0IOLdQA0YAzCMBzRjHBqEtV hocfQ87hszMPbC7ju7Gj20g= X-Google-Smtp-Source: APXvYqyKflGbmb1w//3AutvualxPGAGXIFtDo/2Uj0QTr+pZP2esVeL5CD3FeXeXP0JDlxGwvhCqjw== X-Received: by 2002:a2e:3506:: with SMTP id z6mr37301910ljz.72.1554189630089; Tue, 02 Apr 2019 00:20:30 -0700 (PDT) Received: from [192.168.1.10] ([95.174.107.249]) by smtp.gmail.com with ESMTPSA id e2sm2302627lfc.75.2019.04.02.00.20.28 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 02 Apr 2019 00:20:29 -0700 (PDT) Subject: Re: Issues with i.MX SPI DMA transfers To: Robin Gong , =?UTF-8?Q?Uwe_Kleine-K=c3=b6nig?= Cc: "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-spi@vger.kernel.org" , dl-linux-imx , Fabio Estevam , Pengutronix Kernel Team , Sascha Hauer , Shawn Guo , Mark Brown , "dmaengine@vger.kernel.org" , Vinod Koul , Dan Williams , Andy Duan , Han Xu , Clark Wang References: <08fcbd65-510f-84f8-d6d6-ff56aa9ca9ad@gmail.com> <20190328065247.uz73lap7ljf5q3tb@pengutronix.de> From: Igor Plyatov Message-ID: <95df9334-3d0c-7d13-e431-5a4aa2b9907e@gmail.com> Date: Tue, 2 Apr 2019 10:20:27 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Dear Robin Gong, >> Sorry...below another sdma patch(ad0d92d7ba6a) need to be reverted, >> because spi driver may dynamically change burst length. now I have reverted patch ad0d92d7ba6a. Patches 0001-dma-engine-imx-sdma-add-mcu_2_ecspi-script.patch and 0002-spi-spi-imx-fix-ERR009165.patch are applied. Kernel log show messages [   29.202639] imx-sdma 20ec000.sdma: loaded firmware 3.3 [   29.238595] spi_imx 2008000.spi: probed [   29.242802] spi_imx 200c000.spi: probed [   29.245217] spi_imx 2018000.spi: probed SPI DMA transfers still not work. If I test 32 byte transfers, then they work fine. But 64 byte transfers fails always and I see error messages root@cr7:~# spidev_test -D /dev/spidev4.1 -s 1200000 -b 8 -S 64 -I 1 -l spi mode: 0x20 bits per word: 8 max speed: 1200000 Hz (1200 KHz) [  423.686736] spi_master spi4: I/O Error in DMA RX [  423.691392] spidev spi4.1: SPI transfer failed: -110 [  423.696382] spi_master spi4: failed to transfer one message from queue can't send spi message: Connection timed out Aborted (core dumped) I suppose, transfers shorter then 64 bytes made with help of PIO. Robin, is there any chance for you to find some time and look at this issue again? Best wishes. -- Igor Plyatov